Climate of Boise, Idaho, USA
Point-value climate at Boise (Idaho, United States of America). Population approximately 338,071.
Located in Idaho, United States of America, Boise has a seasonal climate. Population approximately 338,071. Monthly average temperatures range from -0.8°C / 30.6°F in January to 23°C / 73.4°F in July, with rainfall varying from 8 mm / 0.3 in (August) to 40 mm / 1.6 in (January) — about 321 mm / 12.6 in across the year. Boise is the capital of Idaho. These are point-value climate normals sampled at Boise's coordinates — often quite different from the surrounding region's area-weighted average.
Best sunny months: May, June, July, August, September.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | -0.8°C30.6°F | 40 mm1.6″ | Snowy |
| February | 2.4°C36.3°F | 30 mm1.2″ | — |
| March | 6.2°C43.2°F | 36 mm1.4″ | — |
| April | 9.8°C49.6°F | 32 mm1.3″ | — |
| May | 14.4°C57.9°F | 31 mm1.2″ | Sunny & Mild |
| June | 19°C66.2°F | 21 mm0.8″ | Sunny & Mild |
| July | 23°C73.4°F | 9 mm0.4″ | Sunny & Warm |
| August | 22.9°C73.2°F | 8 mm0.3″ | Sunny & Warm |
| September | 17.4°C63.3°F | 19 mm0.7″ | Sunny & Mild |
| October | 11.3°C52.3°F | 20 mm0.8″ | — |
| November | 4.5°C40.1°F | 38 mm1.5″ | — |
| December | -0.3°C31.5°F | 37 mm1.5″ | Snowy |
Frequently asked questions
What is the best time to visit Boise?
The months with the sunniest, driest weather are May, June, July, August, September. Boise's warmest month is July at an average of 23°C / 73.4°F, and its driest month is August with about 8 mm / 0.3 in of rain.
What is the climate of Boise?
Boise, in Idaho, United States of America, has monthly average temperatures ranging from -0.8°C / 30.6°F in January to 23°C / 73.4°F in July. Annual rainfall is approximately 321 mm / 12.6 in, with the wettest month being January (40 mm / 1.6 in) and the driest August (8 mm / 0.3 in).
What is the average temperature in Boise in July?
The average temperature in Boise in July is 23°C / 73.4°F, with rainfall of about 9 mm / 0.4 in — the warmest month of the year.
When is the driest month in Boise?
The driest month in Boise is August, with about 8 mm / 0.3 in of average monthly rainfall. Average temperature that month is 22.9°C / 73.2°F.
When is the wettest month in Boise?
The wettest month in Boise is January, with approximately 40 mm / 1.6 in of average monthly rainfall.